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Early outgassing of Mars supported by differential water solubility of iodine and xenonThe Martian atmosphere has a high X-129/Xe-132 ratio compared to the Martian mantle. As Xe-129 is the daughter product of the extinct nuclide I-129, a means of fractionating iodine from xenon early in Martian history appears necessary to account for the X-129/Xe-132 ratios of its known reservoirs. A model is presented here to account for the Marian xenon data which relies on the very different solubilities of xenon and iodine in water to fractionate them after outgassing. Atmospheric xenon is lost by impact erosion during heavy bombardment, followed by release of Xe-129 produced from I-129 decay in the crust.
Document ID
19910065445
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Musselwhite, Donald S.
(Arizona Univ. Tucson, AZ, United States)
Drake, Michael J.
(Arizona Univ. Tucson, AZ, United States)
Swindle, Timothy D.
(Arizona, University Tucson, United States)
Date Acquired
August 14, 2013
Publication Date
August 22, 1991
Publication Information
Publication: Nature
Volume: 352
ISSN: 0028-0836
Subject Category
Lunar And Planetary Exploration
Accession Number
91A50068
Distribution Limits
Public
Copyright
Other

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